One vertex per element, one color per generator, with an edge from x to x·s.
(4,12)(8,13)(10,16)(14,15)(18,23)(19,27)(21,25)(28,30)(33,34)(35,41)(36,37)(38,46)(39,40)(42,47)(43,44)(45,48) involution — undirected(1,2)(3,7)(4,8)(5,6)(9,11)(10,14)(12,13)(15,16)(17,18)(19,24)(20,25)(21,26)(22,23)(27,31)(28,29)(30,32)(34,40)(36,41)(42,46)(44,48) involution — undirected(2,6)(7,9)(8,13)(14,15)(19,27)(24,31)(28,30)(29,32)(33,35,39,37)(34,36,40,41)(38,43,47,45)(42,44,46,48)(1,2)(3,9)(4,8)(5,6)(7,11)(10,15)(12,13)(14,16)(17,19,22,27)(18,24,23,31)(20,30,26,28)(21,29,25,32)(33,36)(34,35)(37,40)(38,44)(39,41)(42,43)(45,46)(47,48)(1,3)(2,7)(4,10)(5,11)(6,9)(8,14)(12,16)(13,15)(17,20,22,26)(18,25,23,21)(19,28,27,30)(24,29,31,32)(33,37,39,35)(34,41,40,36)(38,45,47,43)(42,48,46,44)(1,4)(2,8)(3,10)(5,12)(6,13)(7,14)(9,15)(11,16)(17,21,22,25)(18,26,23,20)(19,29,27,32)(24,28,31,30)(33,38,39,47)(34,42,40,46)(35,43,37,45)(36,44,41,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.